PPT-Chapter 14: Food & Soil Resources

Global food production World agricultural production has risen faster than human population Figure 91 Global food security However the world still has 800 million hungry people largely due to inadequate distribution. They generally are less than 2 inches thick and are massive Crusts are created by the breakdown of structural units by flowing water or raindrops or through freezethaw action Soil crusts are generally only a temporary condition Typically the soil im Sec. 4-1. Objectives. E.4.1.1 Explain how people use land.. E.4.1.2 Describe the structure of fertile soil.. E.4.1.3 Identify problems that occur when soil is not properly managed.. What are some things land is used for?. USDA Natural Resources Conservation ServiceApril 1996What are soil crusts?ment, air entry, and seedling emergence from the soil.by flowing water, or raindrops, or through freeze-thawcondition. Typica Saving, collecting, or using material again is called: . Recycling . ________ is rock that is removed from Earth for the mineral resources it contains. . Ore. _________________ is the energy given off by the Sun. . .. ENVIRONMENTAL ENGINEERING. LAND - AIR - WATER. GREDELL Engineering Resources, Inc.. Secondary Containment. “What is Sufficiently Impervious”. 3rd ANNUAL NATIONAL INTSTITUTE for STORAGE TANK MANAGEMENT CONFERENCE. Agriculture Review Notes. Industrialized Agriculture. Soil Degradation. Overgrazing. Food Security. Green Revolution. Feedlot Agriculture. Food Choices. Soil: The Foundation for Sustainable Agriculture. Changing Landscape. Activities affect environment. Relationship between resources and sustainable use. Effect of Human Activity. Living on Island Earth. We affect environment when:. Obtain food. Eliminate waste products. A. Using biologic controls such as pheromones to disrupt insect mating cycles . B. Using genetically modified plant varieties that kill insects that chew their leaves. C. Using sodium nitrate as a fertilizer on green leafy vegetables. 1 human . exponential population growth;. 2- . droughts and floods (climate change);. 3- . poor farming practices: monoculture; pest control,. 4 loss . of topsoil and the need for fertilisers;. 5- . alien plants and reduction of agricultural land;. 1 human . exponential population growth;. 2- . droughts and floods (climate change);. 3- . poor farming practices: monoculture; pest control,. 4 loss . of topsoil and the need for fertilisers;. 5- . alien plants and reduction of agricultural land;. 12 Soil and Agriculture CHAPTER Possible Transgenic Maize in Oaxaca, Mexico In 2001, genetically modified (GM) transgenes were found in native Oaxacan maize. Anti-GM activists worry that transgene “contamination Agri. ). SLNA. CONCEPT . AND RELEVANCE . OF WATERSHED MANAGEMENT. WHY WATERSHED MANAGEMENT?. Per capita availability of land in 1951 is 0.91ha. Per capita availability of land in 2050 will be 0.17ha. . Ben . Dor. The . Remote Sensing Laboratory, Tel Aviv . University. bendor@post.tau.ac.il. Presented by . Stephane. . Chevrel. PoC. CA-06. . chevrel@chevrel.eu. . . stephane.chevrel@minpol.com. - it is not just abou. t Diet. A joy of life. A climate change mess. An opportunity for all of us to do something positive. The Nine Planetary Boundaries. 2009 study by a group of Earth system and environmental scientists, led by Johan Rockström from the Stockholm Resilience Centre.